河北廊坊-涿州高速边坡水热因子动态变化规律研究
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林业公益性行业科研专项“建设工程损毁林地植被修复关键技术研究与示范”(200904030);河北省廊涿高速公路管理处项目“廊涿高速中央分隔带绿化植物选择与栽培技术咨询”


Dynamic Variations of Hydro-thermal Factors on Langfang-Zhuozhou Highway Roadsides in Hebei Province
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    摘要:

    水热因子是影响高速公路边坡绿化的关键因子。运用自记温湿度计、自计地温计和太阳辐射表等仪器于2009年6月至2010年5月对廊涿(廊坊—涿州)高速公路阳坡、平地、阴坡和中央隔离带的太阳辐射、地温和土壤水分等水热因子进行了观测。结果表明:(1)不同地形条件下太阳辐射的日变化规律都满足二次曲线方程,地形对太阳直接辐射的影响不显著。(2)不同地形条件下地温月变化均呈"余弦曲线"变化趋势。各地形条件下,40cm的地温条件都是最好的;各深度条件下,在3—8月中央隔离带的地温最高,9—12月和1—2月阳坡的地温最高。(3)不同地形条件下土壤水分月变化均呈波浪形。各地形条件下,20—40cm的土壤水分条件都是最好的;各深度条件下,中央隔离带的土壤水分条件都是最好的。

    Abstract:

    Hydro-thermal factors is a key factors affecting the greening on highway slope.By using self-recording hygrometer,self-recording soil thermometer and other instruments,solar radiation,soil temperature and soil moisture were observed on sunny slope,ground,shady slope and central isolation belt along the Langfang-Zhuozhou highway from June 2009to May 2010.Results show that:(1)The diurnal variations of solar radiation under different terrain conditions meet a quadratic curve.There was no significant impact of terrain on direct solar radiation.(2)The monthly variations of soil temperature are in a“cosine curve” shape under different terrain conditions.The soil temperature at 40cm depth was the highest under different terrain conditions;and the soil temperature in central isolation belt was the highest from March to August,whereas the soil temperature on sunny slope was the highest from September to December and from January to February.(3)The monthly variations of soil moisture are in a wave shape under different terrain conditions.The soil moisture in 20-40cm soil layer was the highest under different terrain conditions,and the soil moisture in central isolation belt was the highest at different depths.

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骆汉,田佳,赵廷宁,郭小平.河北廊坊-涿州高速边坡水热因子动态变化规律研究[J].水土保持通报,2013,(3):125-129

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  • 收稿日期:2012-09-18
  • 最后修改日期:2013-03-06
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  • 在线发布日期: 2014-11-12
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